Peters



(No Mod-e1.) 2 Sheets-Sheet 1. 1

W.'P. HUMPHREYS. DRBDGING APPARATUS.

No. 417.185. Patented Deo. l0, 1889.

lllllllllllulll N. PETERS. PMID-Lithbhphor. Wzshingrm. D. C.

(No Model.) 2 Sheets-Sheet 2. W. P. HUM-PHREYS.

DREDGING APPARATUS. No. 417.185. Patented Dec. 10, 1889.

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45 1 pipe having the 'features of my imln'oveinent I UNITED STATESPATENT OFFICE.

IVIIIIIIAM P. IIUMPIIREYS, OF SAN FRAOISOO, CALIFORNIA, ASSIGNOR 'lOCHARLES DODGE, OF `KVASI'IINGTON, DISTRICT OF COLUMBIA.

DREDGING APPARATUS.

Y SPECIFICATION forming part of Letters Patent No. 417,185, datedD\ecember 10, 1889.

Application filed August 24, 1889. Serial No. 321,830. (No model.)

To all whom it may concern;

Be it known that I, IVILLIAM P. HUM- PHREYS, a citizen of the UnitedStates, residing at San Francisco, in the county of San Francisco andState of California, have invented certain new and useful Improvementsin Dredging Apparatus; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableoth'ers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and iigures of reference marked thereon, which form a part ofthis specification.

My invention relates to dredging-machines, and has particular referenceto means for mounting, operating, and protecting the suction-pipe ofhydraulic excavators.

The leading objects of my invention may be stated to be as follows, viz:rst, an im4h proved means for strengthening or protecting thesuction-pipe whereby the entire length of the pipe is braced andstrengthened; second, an improved joint or means for connecting thepipe-protector to the boat, so that the pipe and its protector may swingin unison whether in -vertical arcs-only or in both vertical andhorizontal arcs; third, an vimproved manner of mounting the shaft foroperating the excavator; fourth, an improved means 5 for raising andlowering the pipe and its at tachments, whereby easy and even torce isbrought to bear upon all points of suspension.

In addition to these general purposes and objects the inventioncomprises various novel features of construction. v

Y The nature of my invention and the manner Ain which I construct andoperate the same will be understood trom the following detaileddescription.

The accompanying` drawings illustrate a means ior carrying my 'inventioninto practice.

Figure l is a side elevation ol' a suctionillustrated with it, andshowingthe excavator and a section of a portion of a dredge-boat. Figs.2, 3, 4, 5, and 6 are transverse sections of suction pipe and protector,showing differ ent ways of providing the protector. Fig. 7 is a sideelevation ot' the pipe having a reenforce or protector integraltherewith and the manner of providing the hinge therefor. Fig. S is aplan view of a portion, showing trunnions upon the protector instead ofa hinge and swivel.

Similar letters of reference indicate corresponding parts in all thefigures where they occur.

A represents the end of a dredge-boat.

B is the suction-pipe, and O the excavator. The suction-pipe andexcavator may be united in any suitable manner, as by universal joint,as shown at l), and the suction-pipe is provided with a universal jointb' at the boat. The joint b is suspended by means of aband b2 and linkb3, swiveled at a point above, as shown at b4; but I do not lay claim toythis manner of swinging the suction-pipe, as it is not my invention.

The excavator O may be of any desired form and mounted and controlled inany convenient manner, as will be'readily understood by those skilled indredging machinery.

D is the protector for the suction-pipe, which may consist of a jacket,as shown in Figs. l, 2, 3, and e, or'of a re-enforce or enlargementintegral with the pipe, as shown in Figs. 5, 6, and 7. In either case itforms an effectual strengthening means for the whole length of pipe,protecting it against undue lateral strain and guarding aga-instbursting.

AS shown in Fig. 2,' the protect-or consists of a trough whose sidesextend to or above the top of the suction-pipe. As shown in Fig. 3, itconsists of a complete cylinder or tube encircling thc entirecircumference of the pipe.

As shown in Fig. 4, the jacket or protector is of the same forni as thatshown in Fig. 2, but is provided with a flat or other suitablyshaped andseparate cap-piece D.

lhere the protector is formed integral with the pipe, it may extend allround, as shown by the thick walls in Fig. 5, or it may extend only apart ot' the way round, as shown by re-entorce d in Fig. 6, whichre-enforeed side is preferably placed under the bottom of the pipes.

IOO

I do not in this pat-ent cla-ini the re-enforce form of protector,having made it the subjectrnatt-er of an application for patent filedNovember 18, 188i), Serial No. 330,677.

The protector has a connection to the barge or boat independent of thesuction-pipe connection, which may consist of a `hinge (Z, as shown inFig. 1, or trunnionsfl2 (Z2, as shown in Fig. 8, which latter work insockets in or upon the boat. Vhen the trunnions are employed, theprotector can only swing' vertically, and consequently the suction-pipecan have but the one inotion--viz., vertical-independent of the boat.

I do not in this application claim the trunnion form of hinge, the samehaving been made the subject-matter of a separate application for patenttiled September '18, 1889, Serial No. 324,310; but with the l'iinge Ihave devised a means for permitting movement of the suction-pipe andprotector in both vertical and horizontal arcs. This consists of swiveling theleaf or butt d3 of the hinge to the boat, as shown at d", bywhich means, in connection with the universal joint on the pipe, thepipe and protector can be swung in both vertical and horzontal aros, andthe horizontal movement can be eifected when the lsuction-pipe andprotector are in anyl degree of elevation 0r inclination. At suitablepoints the protector is equipped with cleats or straps e e, which aremade to surround the entire sueti'on-,pipe and serve to provide seatsfor the bearings e c of the shaft E, which operates th excavator orcutter, thereby permitting .the shaft|` to be mounted directly on top ofthe suction-pipe, whereby it is stit'fened and s upported at numerouspoints in its length. The construction of the parts and the weight ofthe mechanism to which the suction-pipe .is connected are therebysimplified and reduced to a minimum, while all necessary strength andeffectiveness are insured.

Ears c* c* are provided upon the straps to which the hangers or links ffare attached, which at .their opposite ends connect with the lowerpulley-blocks F of a block and tackle rigged from a projecting beam orcrane G above the suction-pipes. The rope Fi: at its outer endpreferably connects with the excavator C, and is rove through the blockscomprising the series until it reaches the boat, where it is belayed inany suitable manner. The upper blocks are marked F', and there `willpreferably be as many upper and lower blocks as there are cleats orstraps around the protector and pipe; but I would not insist on thisuniformity in number, as it may be found desirable to provide a greaternumb'er of cleats or straps than pairs of pulleyblocks. Thisblock-and-tack-lc arrangement serves to give an evenly-distributed pullupon the various points at which the tackle is connected to thesuction-pipe, and thereby detends against strains upon the suction-pipe,which, if sudden, may result inthe immediate fracture of the pipe incase the strain or pull is applied at one pointf'as is usuallyY the casein dredges now known land used.

' Theft-ame or crane Gr may be of any desired form, and may be made toswing laterally with the suction-pipe when the latter has the lateralmovement. If desired, itmay be a fixed frame and extend upon both sidesof the cut or opening of the boat made for the suction-pipe in caseswhere the latter has one motion only-viz., the vertical.

It is apparent that in many of the details of construction modificationswithin wide limits may be made without departing from the purview landspirit of my invention or sacrificing its advantages.

It is apparent that the block-and-tackle arrangement herein shown andclaimed can be used with any form of suction-pipe.

Having thus described myinvention, what I claim, an d desire to secureby Letters Patent, is-

1. A suction-pipe for d redgers, having a jacket-protector,substantially as and for "the purpose set forth.

2. A s uction-.pipe for dredgers, having a j ticket-protector,substantiallyas described, and provided with a connection to thedredgerboat independent of the connection of y'the suction-pipe, as setforth.v

3. The combination, with a suction-.pipe having a universal joint at itscon nection with the boat, of a jacket-protector for said suction-pipe,having a hinge and a swivel to permit it to move in both directions withthe suction-pipe.

4. The combination, with a suction-pipe having' a u niversjalv j ointatits connection with the boat, of 'a `protectorfor the suction-pipe,having a h-inge to permit its vertical movement, and swivel in the -buttor leaf connected to the-.boat to permit its horizontal movement'.

5. A protector for suction-pipes, consisting of a jacket fitting uponthe suction-pipe, ras set forth. v

6.' A protector for suction-pipes, consisting of a trough in which thesuction-pipe 4is held, as set forth.v

7. Aprotector for suction-pipes, composed of a trough and a separatecapl or top piece, and cleats or straps for uniting the parts..

8. The 'combinatiomwith al suction-'pipe jacket-protector therefoigotcleats orb y' s surrounding the jacket and forming supports forbearings, and an operating-shaft mounted in' said bearings directly overthe suctionpipe. v

9. The combinatiomwith a suction-pipe and protector therefor hav-ingcleats or straps surrounding it, of bearings secured upon said cleats orstraps directly over the suetionipe and a shaft mounted in saidbearings, as set forth.

10. The combination, with a suction-pipe and a jacket therefor havingcleats or bands around it, of a series ofv block-and-,taokle sheavesattached to said bands or cleats and IOO a corresponding series attachedto a beam at one end to the pipe o1' cutter and rove overhead, and aropePove through both sethrough the entire series, as set forth. Io

ries, as set forth. In testimony whereof I aix my signature in 11. Thecombination, with a suction-pipe presence of two Witnesses.

having a series of cleats 01' straps, of a series WILLIAM P.I-IIIMPHREYS. of sheave-blooks linked thereto, a correspon d- Witnesses:

ing series of sheave-bloeks suspended from a I. N. KALB,

era-ne or fra-me above, and a Tope connected C. S. DOMER.

